RANKING · 2024 ACS · 88 SHOWN OF 88

Largest Irish population, Ohio counties

Ohio counties ranked by the number of residents who are Irish ancestry, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 88 counties in Ohio that qualify, ranked against each other statewide. The median across all 88 is 6,756. Biggest climber in the top 100 since 2020: Adams County, OH, up 11 places to #68.

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OhioAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPIRISH POPULATIONVS 2010

01Franklin County, OHOH1,361,536149,529−9%

02Cuyahoga County, OHOH1,232,925145,837−14%

03Hamilton County, OHOH838,418100,835−14%

04Summit County, OHOH538,37671,812−14%

05Montgomery County, OHOH539,59863,324−8%

06Stark County, OHOH373,77148,744−17%

07Lucas County, OHOH423,34748,084−18%

08Butler County, OHOH400,12847,247−5%

09Lorain County, OHOH323,21943,573−13%

10Lake County, OHOH232,21740,155−7%

11▲2Delaware County, OHOH242,03233,038+22%

12▼1Mahoning County, OHOH224,70631,524−21%

13▼1Warren County, OHOH257,18130,624+5%

14▲1Clermont County, OHOH216,97729,102−18%

15▼1Medina County, OHOH185,02529,056−7%

16▲1Licking County, OHOH185,56423,864−9%

17▲3Trumbull County, OHOH198,97222,643−26%

18Greene County, OHOH174,32222,258+7%

19▼3Portage County, OHOH163,40422,256−19%

20▼1Fairfield County, OHOH169,75219,337−17%

21Clark County, OHOH135,34017,429−17%

22▲1Columbiana County, OHOH99,37716,960−12%

23▼1Wood County, OHOH134,17615,095−16%

24▲2Geauga County, OHOH95,67614,471−10%

25▼1Ashtabula County, OHOH96,71313,860−14%

26▲2Richland County, OHOH124,89313,680−19%

27▼2Miami County, OHOH112,63413,297−4%

28▲1Wayne County, OHOH116,75811,659−21%

29▼2Allen County, OHOH100,88111,611−14%

30Tuscarawas County, OHOH92,37311,116−25%

31▲2Erie County, OHOH73,29610,803−8%

32▼1Jefferson County, OHOH63,5979,905−17%

33▼1Muskingum County, OHOH87,0149,756−27%

34▲2Athens County, OHOH63,1979,531+5%

35▲2Scioto County, OHOH71,3659,076−24%

36▼2Belmont County, OHOH64,4348,896−29%

37▲2Union County, OHOH73,4468,817+14%

38▼3Ross County, OHOH76,4298,695−26%

39▲4Pickaway County, OHOH62,9788,641+5%

40▲2Marion County, OHOH65,1158,046−20%

41Washington County, OHOH58,3898,041−23%

42▼4Knox County, OHOH64,0027,863−9%

43▲2Lawrence County, OHOH55,7107,434−8%

44▼4Hancock County, OHOH75,0346,756−18%

45▲1Madison County, OHOH46,9856,574−7%

46▼2Huron County, OHOH58,2506,334−27%

47Sandusky County, OHOH58,6556,172−16%

48▲8Guernsey County, OHOH38,3796,1300%

49▲8Clinton County, OHOH42,3015,899−10%

50▼2Seneca County, OHOH54,5225,897−1%

51▲2Logan County, OHOH46,3025,855−5%

52▼2Ashland County, OHOH52,5235,735−4%

53▼2Champaign County, OHOH38,8205,432−9%

54Brown County, OHOH44,3975,372−15%

55▲4Highland County, OHOH43,8235,292−19%

56▲7Darke County, OHOH51,5205,228−7%

57▲4Ottawa County, OHOH39,4815,215+5%

58▼9Fulton County, OHOH41,8535,109+1%

59▲1Auglaize County, OHOH45,9094,920−15%

60▼2Coshocton County, OHOH37,1884,899−7%

61▼6Crawford County, OHOH41,8964,801−24%

62▼10Perry County, OHOH35,9184,672−12%

63▼1Shelby County, OHOH48,0654,624−15%

64Preble County, OHOH40,6644,524−27%

65▲3Morrow County, OHOH36,3054,418−12%

66▲9Fayette County, OHOH28,5523,889+27%

67▲6Jackson County, OHOH32,8173,876+1%

68▲11Adams County, OHOH27,8653,846−12%

69▼4Williams County, OHOH36,5493,769−18%

70▼1Carroll County, OHOH26,4753,638−13%

71▼1Gallia County, OHOH29,0723,609−25%

72▼1Mercer County, OHOH42,7373,590+6%

73▼7Defiance County, OHOH38,2923,503−28%

74▼7Hocking County, OHOH27,5123,381−18%

75▼3Hardin County, OHOH30,0723,198−34%

76▼2Meigs County, OHOH21,5872,701−20%

77▼1Pike County, OHOH27,0612,606−39%

78▼1Henry County, OHOH27,5982,518−17%

79▲1Putnam County, OHOH34,3802,326−14%

80▼2Wyandot County, OHOH21,5672,200−13%

81Van Wert County, OHOH29,0131,995−44%

82▲5Noble County, OHOH14,2761,715−10%

83Harrison County, OHOH14,0701,680−32%

84▼2Holmes County, OHOH44,9701,670−40%

85▼1Paulding County, OHOH18,7271,630−21%

86▼1Morgan County, OHOH13,6261,584−18%

87▼1Monroe County, OHOH12,9941,384−35%

88Vinton County, OHOH12,6451,330−31%

SHOWING 1–88 OF 88

Download CSV (full list, 88 rows)

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES